Exam Review

Question 1

What is prophase?

Answer 1

Chromatin coils up to form chromosomes, Nucleolus and nuclear membrane disappear,Centrioles separate and move to opposite ends, Spindle fibres begin to form at the centrioles and stretch across the cell, Spindle fibres attach to one side of each centromere

Question 2

What is metaphase?

Answer 2

Double stranded chromosomes line up along the middle of the cell (the metaphase plate or equator)

Question 3

What is anaphase?

Answer 3

Spindle fibres begin to shorten and contract, Centromeres are separated, Each chromosome splits into TWO sister chromatids, The two sister chromatids move to opposite ends of the cell

Question 4

What is telophase?

Answer 4

Spindle fibres disapear, Nuclear membrane forms around each set of chromosomes, Nucleolus appears within each nucleus, Single-stranded chromosomes start to uncoil into thin strands of chromatin